ADOPTED LEVELS for 178Tl

Authors: E. Achterberg, O.A. Capurro, G.V. Marti |  Citation: Nucl. Data Sheets 110, 1473 (2009) |  Cutoff date: 31-May-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-8.36×103 keV SYS(n)= 9.54×103 keV SYS(p)= -7.0×102 keV SYQ(α)= 7.02×103 keV 5
Reference: 2012WA38

General Comments:

2002Ro17: 178Tl activity produced by the 102Pd(78Kr,pn) reaction, at 355 MeV (beam, 340 MeV at mid-target). 2-ms period pulsed beam. Berkeley gas-filled separator for reaction products, followed by parallel-plate avalanche counter. Position-sensitive Si strip detector for evaporation residue implantation, and α decay measurements.

Q-value: Note: Current evaluation has used the following Q record

Q-value: ΔQ(β)=120, ΔS(n)=120, ΔS(p)=140 2003Au03

Q-value: Q(β+)=11560 110 keV (estimated by 2003Au03 from systematics)




E(level)
(keV)
T1/2(level)
  0.0 254 ms +11-9 
% ε ≈ 47
% α ≈ 53

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.0 254 ms +11-9 
% ε ≈ 47
% α ≈ 53
The 178Tl g.s. decays by four α branches to states in 174Au, and by ε decay to 178Hg. The α transition energies are: 6.859 5, 6.785 5, 6.704 5 and 6.616 15 MeV, with relative I(α) of 10, 18, 59 and 13%, respectively (2002Ro17). Other: 1997Ca16 report Eα=6.87, 6.79, 6.71 MeV, for the first three branches.
E(level): The 178Tl g.s. decays by four α branches to states in 174Au, and by ε decay to 178Hg. The α transition energies are: 6.859 5, 6.785 5, 6.704 5 and 6.616 15 MeV, with relative I(α) of 10, 18, 59 and 13%, respectively (2002Ro17). Other: 1997Ca16 report Eα=6.87, 6.79, 6.71 MeV, for the first three branches.

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